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Formulas of all chp - physics - Coggle Diagram
Formulas of all chp - physics
Force
moment of force = F x d
1 nm = 10 to the power 5
moment of couple = f x d
Work,energy and power
work = f x d
W = F S cos theta
S.I unit is Watt
p = w / t
bigger units 1kW = 10 to the power 3 , 1MW = 10 to the power 6 W ,1GW = 10 to the power 9
smaller units 1mW = 10 to the power -3
1 H.P = 746 W
U = mgh
machine
M.A = load / effort
efficiency = work output / work input
V.R = displacement of effort / displacement of load
M.A - effort arm / load arm
Refraction of light at plane surfaces
refractive index = real depth / apparent depth
refractive index of glass with respect to air = wavelength of light in air / wavelength of light in water
minimum deviation = 2i - refracting angle
shift = real depth (1- 1/refractive index )
Energy
S.I unit is Joule
C.G.S unit is erg
Watt hour
1 watt hour = 3.6 J
Kilowatt hour
1 KW = 3.6 MJ
refraction through a lens
lens formula
1/v - 1/u = 1/f
magnification
m = v/u
Sound
frequency of waves per sec = v / wavelength
velocity = frequency x wavelength
v = 2d / t
Spectrum
velocity = frequency x wavelength
f = speed of light / wavelength
wavelength = c / v